graad 12 national senior certificate grade 12 - Department of Basic ...

Physical Sciences/P1 3 DBE/Feb.–Mar. 2012NSCSECTION AQUESTION 1: ONE-WORD ITEMSGive ONE word/term for each of the following descriptions. Write only the word/termnext to the question number (1.1–1.5) in the ANSWER BOOK.1.11.21.31.41.5The type of energy an object has due to its motionThe phenomenon which occurs when two light waves meet at a given pointThe unit of measurement of electrical resistanceThe basic principle on which electric generators functionThe type of line spectrum observed when electrons in an atom move from theexcited state to the ground state(1)(1)(1)(1)(1)[5]QUESTION 2: MULTIPLE-CHOICE QUESTIONSFour options are provided as possible answers to the following questions. Eachquestion has only ONE correct answer. Write only the letter (A–D) next to the questionnumber (2.1–2.10) in the ANSWER BOOK.2.1 A car of mass m collides head-on with a truck of mass 2m. If the car exerts aforce of magnitude F on the truck during the collision, the magnitude of theforce that the truck exerts on the car is …ABCD1 F2F2F4F (2)2.2 An object moves in a straight line on a ROUGH horizontal surface. If the network done on the object is zero, then …ABCDthe object has zero kinetic energy.the object moves at constant speed.the object moves at constant acceleration.there is no frictional force acting on the object. (2)Copyright reservedPlease turn over